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Effects of the Lateral Ejection Angles and Distances of Double-Jet Holes on Flim Cooling Effectiveness

이중분사 막냉각 홀의 측면 분사각 및 홀 사이의 거리가 막냉각 효율에 미치는 영향

  • 최대웅 (인하대학교 대학원 기계공학과) ;
  • 이기돈 (인하대학교 대학원 기계공학과) ;
  • 김광용 (인하대학교 기계공학부)
  • Received : 2012.04.07
  • Accepted : 2012.05.27
  • Published : 2012.08.01

Abstract

In the present work, a parametric study on double-jet film-cooling has been carried out to enhance the film-cooling effectiveness using three-dimensional Reynolds-averaged Navier-Stokes analysis. The shear stress transport turbulence model is used as the turbulence closure. The lateral ejection angles and the lateral and streamwise distance between the centers of the cooling holes are chosen as the geometric parameters. The spatially averaged film-cooling effectiveness averaged over an area of 8 hole diameters in width and 30 hole diameters in streamwise length is used to evaluate the performance of film-cooling. The parameter of the lateral distance has the largest impact on the film cooling effectiveness compared to the others. On the other hand, the parameter of streamwise distance gives the least influence on the film cooling effectiveness.

Keywords

References

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